27% of organizations do not conduct any formal quality reviews. —Cutter Consortium

Formal design and code inspections average about 65% in defect removal efficiency. Most forms of testing are less than 30% efficient. —“Software Quality: Analysis and Guidelines for Success,” by Capers Jones

Developers spend about 80% of development costs on identifying and correcting defects. —The National Institute of Standards and Technology

Peer reviews of software will catch 60% of defects. —Institute of Electrical and Electronics Engineers